A slight tap (but often harder) during rough sexual intercourse role-playing to let your partner know you have had a little too much, or it's a little too rough.

Lance and Trixie were role playing "underground prison sex in Beirut."

Lance eased his hog into Trixie, who was tied up on a love swing. The 6 hits of liquid blotter acid he shot into his eye earlier got him going a little too much, and Trixie had to give him a safety tap to slow him down a little.